JP2002006228A - Video type microscope for surgery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video type microscope for surgery which prevents a housing from touching the body of a patient. SOLUTION: The video type microscope for surgery which picks up the image of a subject formed by a photographic optical system by means of an image pickup device has the housing which holds the photographic optical system and has an opening for introducing the light form the subject into the photographic optical system and a reflecting mirror which is supported by the housing and reflects the light from directions exclusive of the optical axis direction of the photographic optical system and makes this light incident on the photographic optical system from its optical axis direction through the opening of the housing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surgical video microscope for enlarging a subject's tissue as a subject and taking a video.

[0002]

2. Description of the Related Art Video surgical microscopes of this type are used, for example, in the treatment of fine tissues such as neurosurgery.

[0003] That is, in organs composed of fine tissues such as the brain, it is difficult to identify the structural tissues with the naked eye, and thus such organs must be treated under a microscope. On the other hand, with a conventional binocular optical microscope, the main surgeon in charge of surgery (or his assistant in some cases) can see the microscope image, but other people (eg, anesthesiologist, Nurses, trainees, and advisors at remote locations cannot see the same microscopic image, and thus could not perform quick and accurate sharing work or provide accurate advice from remote locations. Therefore, in recent years, there has been proposed a video stereo microscope in which a subject image formed by a high-magnification photographing optical system is video-captured and displayed on a plurality of monitors.

For example, Japanese Patent Publication No. 2607828 discloses a surgical video microscope having a structure in which a subject image formed by a pair of photographing optical systems is photographed by an imaging device arranged behind the photographing optical system. ing.

[0005]

However, in the case of an optical configuration in which the subject, the photographing optical system, and the image pickup device are arranged in a straight line, there is no problem in taking a picture in the vertical direction from directly above the subject. For example, when trying to photograph a complicated part such as the subject's own body in a direction in which the subject can be photographed, such as in a nasal cavity, a video incorporating a photographing optical system and an image pickup device The handling of the microscope is limited, such as the body of the microscope hitting the body of the subject.

To alleviate this problem at all,
The present applicant has filed Japanese Patent Application No. 11-150830,
A video microscope was proposed in which the imaging optical system was bent at a right angle. However, even in the video microscope according to the prior application, the video microscope may hit the body of the subject depending on the posture of the video microscope main body at the time of photographing.

An object of the present invention, which has been made in view of such a problem, is to provide a well-operated surgical operation that can more reliably prevent the main body from hitting the body of a subject by using a configuration different from the prior application. Video microscope.

[0008]

In order to achieve the above-mentioned object, a video microscope according to the present invention is a video microscope for surgery in which an image of a subject formed by a photographing optical system is photographed by a photographing apparatus. A housing having an opening for holding the system and introducing light from the subject into the photographing optical system; and a light supported by the housing and from a direction other than the optical axis direction of the photographing optical system. And a reflecting mirror for reflecting the light from the optical axis through the opening of the housing to the photographing optical system from the optical axis direction.

With this configuration, the optical axis of the photographing optical system is bent by the reflecting mirror on the object side. That is, the direction of the subject to be photographed is deflected by the reflecting mirror. As a result, the photographing optical system and the imaging device do not need to be aligned with the subject, so that the housing is prevented from hitting the body of the subject, and the video-type microscope itself is easily handled.

The reflecting mirror may be fixed to the housing in a state where the reflecting mirror is oriented in a predetermined direction. It is preferable that the housing is supported by the housing such that the inclination direction with respect to the axis is adjustable. With this configuration, the imaging optical axis in front of the reflector is kept constant,
Since the housing can be oriented in any direction, the handling is further improved. As a structure for adjusting the tilt direction of the reflecting mirror, a ball joint, a flexible tube, or a universal joint can be used.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

In each of the embodiments described below, a video microscope for surgery according to the present invention is a video stereo microscope capable of forming a stereo image of a subject on an imaging surface of an imaging device by a pair of imaging optical systems. (Hereinafter simply referred to as “stereo microscope”). The stereomicroscope is used by being incorporated into a surgery support system used in, for example, neurosurgery.
This surgery support system is a stereoscopic image (stereo image) obtained by video-taking a patient's tissue using a stereo microscope.
Is displayed on a stereoscopic viewer dedicated to the operator or a monitor for other staff, and is recorded on a recording device.

[0013]

Embodiment 1 (Overall Configuration of Surgery Support System) FIG.
1 is a system configuration diagram schematically showing a surgery support system as a first embodiment of the present invention. As shown in FIG. 1, the surgery support system includes a stereo microscope 101,
A high-vision CCD camera 102 attached near the upper end of the back of the stereo microscope 101 and a stereo microscope 10
Counter weight 104 attached to the upper surface of
A light guide fiber 105 penetrating through the through-hole formed in the counter weight 104 and conducting to the inside of the stereoscopic microscope 101;
05, a light source device 106 for introducing illumination light to the stereoscopic microscope 101, a distributor 111 connected to the high-vision CCD camera 102, a recording device 115, a monitor 114, and a stereoscopic viewer 11 connected to the distributor 111.
3 and so on.

The above-mentioned stereo microscope 101 is detachably fixed to the tip of the free arm 100a of the first stand 100 via a mount mounted on the back surface. Therefore, the stereoscopic microscope 101 is provided with the first stand 1
The free arm 100a can move freely and can face any direction within the radius that the free arm 100a can reach.

The optical configuration inside the stereo microscope 101 will be described in detail later.
As shown in FIG. 2, the subject is a large-diameter close-up optical system 210 having a single optical axis, and a pair of left and right zoom optics for converging light transmitted through different portions of the close-up optical system 210, respectively. System 220, 230
The left and right field stops 270,
At positions 271, respective images are formed as primary images. These left and right primary images are formed by a pair of left and right relay optical systems 240 and 2.
HDTV CCD camera 1 relayed by 50
02 in the CCD 116 serving as an imaging device having an imaging surface of a high-definition size (vertical and horizontal aspect ratio = 9: 16). Is re-imaged.
In this optical system, the close-up optical system 210, one zoom optical system 220 and one relay optical system 240 form one photographing optical system, and the close-up optical system 21
0, the other zoom optical system 230 and the other relay optical system 250 constitute the other photographing optical system, and together form a pair of photographing optical systems arranged at a predetermined base line distance.

With such a pair of photographing optical systems, CC
Left and right imaging regions on the imaging surface of D116 (two regions divided in the direction of the base line length on the imaging surface)
Is equivalent to a stereo image in which images respectively taken from two locations separated by a predetermined base line length are arranged on the left and right. The output signal of the CCD 116 is generated as a Hi-Vision signal by the image processor 117, and is output from the Hi-Vision CCD camera 102 to the distributor 111.
Output to.

The stereoscopic microscope 101 has a built-in illumination optical system 300 (see FIG. 6) for illuminating a subject located near the focal point of the close-up optical system 210. Then, illumination light is introduced into the illumination optical system 300 from the light source device 106 via the light guide fiber bundle 105.

Returning to FIG. 1, a high-vision CCD camera 1
The high-vision signal of the subject input from 02 is distributed by the distributor 111 to the stereoscopic viewer 113 for the main operator.
The monitor 114 is supplied to a monitor 114 for other surgical staff or an advisor at a remote place, and a recording device 115.

The stereoscopic viewer 113 includes the second stand 1
Twelve free arms 112a are attached by hanging from the tips. Therefore, it is possible to arrange the stereoscopic viewer 113 in accordance with a posture in which the main operator can easily perform the treatment. FIG. 3 shows a schematic configuration of the stereoscopic viewer 113. As shown in FIG. 3, the stereoscopic viewer 113 includes a high-definition size LCD panel 120.
Is built in as a monitor. This LCD panel 12
When the image based on the HDTV signal from the distributor is displayed at 0, as shown in the plan view of FIG. 4, the image taken in the left imaging area of the CCD 116 is provided on the left half 120b of the LCD panel 120. Displayed, right half 1
On 20a, an image photographed in the right photographing area of the CCD 116 is displayed. The optical path in the stereoscopic viewer 113 is defined by a partition wall 121 installed perpendicularly to a boundary 120c between the left and right display areas of the LCD panel 120.
It is divided into left and right. On both sides of this partition 121,
The wedge prisms 1 are arranged in order from the LCD panel 120 side.
19 and an eyepiece 118 are arranged. The eyepiece 118 converts the virtual image of the image displayed on the LCD panel 120 into about 1 m (-1 diopter) in front of the observation eye I.
Is a lens formed by enlarging at the position of. The wedge prism 119 corrects the traveling direction of light so that the angle of convergence of the observation eye I is equal to the angle at which an object existing 1 m ahead is observed, thereby enabling natural stereoscopic observation. (Configuration of stereo microscope) Next, the stereo microscope 101 described above is used.
The specific configuration of the camera (including the high-vision CCD camera 102) will be described in detail with reference to FIG. In order to make the following description easier to understand, the vertical direction in FIG. 5 is defined as the vertical direction of the stereomicroscope 101, and the direction connecting the upper left and lower right in FIG. Is defined.

The housing 1 of the stereo microscope 101 is
As shown in the perspective view of FIG. 5, the rear surface to which the high-vision CCD camera 102 is attached is flat, and has a substantially prismatic shape in which both side edges of the front surface (opposite to the rear surface) are chamfered. In the center of the upper surface, a concave portion 1a having a circular opening is formed. At the center of the concave portion 1a, an insertion opening (not shown) for inserting a guide pipe 122, which is a cylindrical member into which the tip of the light guide fiber bundle 105 is inserted and fixed, is formed. The annular member (fiber guide insertion portion) 123 attached to the opening of the insertion port is used for the guide pipe 1 inserted into the insertion port.
22 is a chuck for fixing 22.

An opening 1b for exposing the object side surface of the close-up optical system 210 and the illumination optical system 300 and allowing light to pass therethrough is opened in the lower surface of the housing 1 of the stereomicroscope 101. Further, as shown in FIG. 9, an upper end of a stay 3 formed of an L-shaped bent bar is fixed near the rear side edge of the lower surface of the housing 1. And at the other end of this stay 3,
A reflecting mirror 2 having a rectangular reflecting surface is fixed so as to be inclined with respect to the lower surface of the housing 1 and face the opening 1b. Therefore, the above-described photographing optical system 200 forms a real image of the subject reflected on the reflecting mirror 2. The shape of the reflecting surface of the reflecting mirror 2 is
A shape other than a rectangle, such as a circle or an ellipse, may be used, but a shape that envelopes the effective range of the imaging optical system 100 and the effective range of the illumination optical system 300 is desirable. <Optical Configuration> Next, the optical configuration in the stereomicroscope 101 will be described.
This will be described with reference to FIGS. 6 is a side view showing the optical configuration of the microscope optical system, FIG. 7 is a front view, and FIG. 8 is a plan view.

As shown in each of these drawings, the microscope optical system includes a light source device 106 including a photographing optical system (a pair of left and right photographing optical systems) 200 for electronically photographing an image of a subject and a light guide fiber bundle 105. An illumination optical system 300 that illuminates a subject with illumination light guided from the camera, and a reflecting mirror 2 that is obliquely disposed ahead of the imaging optical system 200 and the illumination optical system 300.

A photographing optical system (a pair of left and right photographing optical systems) 20
0 is one close-up optical system 210 shared by the left and right and a pair of left and right zoom optical systems 2 as described above.
A pair of right and left relay optical systems 240 and 230 for relaying a primary image of the subject formed by the objective optical system to form a secondary image of the subject;
And a converging prism 260 as an inter-optical axis distance reducing element for bringing the subject light from these relay optical systems 240 and 250 closer to each other.

Field stops 270 and 271 are disposed at positions where the primary images are formed by the zoom optical systems 220 and 230, respectively. The relay optical systems 240 and 250 are provided as optical path deflecting elements for deflecting the optical path at right angles. Are disposed, respectively.

With such a configuration, the CCD camera 10
The left and right subject images having a predetermined parallax can be formed in two adjacent regions on the CCD 116 arranged in the second CCD 2. In the description of the optical system, “left and right” is C
When projected onto the CD 116, the direction coincides with the longitudinal direction of the imaging surface, and “up / down” refers to the direction orthogonal to the left / right direction on the CCD 116. Hereinafter, the configuration of each optical system will be described in order.

As shown in FIGS. 6, 7, and 8, the close-up optical system 210 includes a negative first lens 211 and a positive second lens 212 arranged in order from the object side. The second lens 212 is movable in the optical axis direction,
The focus can be adjusted for objects at different distances by the movement adjustment. That is, the close-up optical system 210 is adjusted so that the subject is located at the object-side focal point, and has a collimating function of converting divergent light from the subject into substantially parallel light. Note that the distance from the vertex of the object side surface of the first lens 211 of the close-up optical system 210 to the object-side focal point is referred to as “working distance”. In the present embodiment, 500+ / -10
It is set to 0 mm.

First and second close-up optical systems 210
Each of the lenses 211 and 212 has a substantially semicircular shape in which the planar shape viewed from the optical axis direction is D-cut, and the illumination optical system 300 is disposed in the cut portion.

The pair of zoom optical systems 220 and 230 form subject light from the close-up optical system 210 at infinity at the positions of the field stops 270 and 271 respectively.

One zoom optical system 220 is shown in FIGS.
As shown in (1), the first and fourth lenses are configured in order from the close-up optical system 210 side, having first to fourth lens groups 221, 222, 223, and 224 having positive, negative, negative, and positive powers, respectively. The groups 221 and 224 are fixed, and zooming is performed by moving the second and third lens groups 222 and 223 in the optical axis direction. The magnification is changed mainly by moving the second lens group 222, and the focal position is kept constant by moving the third lens group 223.

The other zoom optical system 230 has the same configuration as the above-described zoom optical system 220, and includes first to fourth lens groups 231, 232, 233, and 234. These zoom optical systems 220 and 230 are linked by a drive mechanism (not shown), and can simultaneously change the photographing magnification of the left and right images.

The optical axis Ax of the zoom optical systems 220 and 230
2, Ax3 is the optical axis Ax1 of the close-up optical system 210.
And the zoom optical systems 220 and 23
The plane including the optical axes Ax2 and Ax3 of 0 is parallel to the plane and includes the optical axis of the close-up optical system 210.
It is separated by Δ on the opposite side of the D cut portion.

The diameter of the close-up optical system 210 is set to be larger than the diameter of a circle containing the maximum effective diameter of the zoom optical systems 220 and 230 and the maximum effective diameter of the illumination optical system 300. As described above, the zoom optical systems 220 and 2
The 30 optical axes Ax2 and Ax3 are close-up optical systems 210.
By setting the optical axis Ax1 at a position farther from the D-cut portion than the optical axis Ax1, the illumination optical system 300 can also be accommodated within the diameter occupied by the close-up optical system, and the whole can be compacted.

The field stops 270 and 271 are arranged at positions of primary images formed by the zoom optical systems 220 and 230. As shown in FIG. 6, the field stops 270 and 271 have a circular outer shape, and have semicircular openings on the inner side in the left-right direction. Each of the field stops 270 and 271 is arranged such that the straight edge of the opening coincides with the direction corresponding to the boundary between the left and right images on the CCD 116, and transmits only light beams inside the boundary.

As described above, in the stereoscopic microscope of the present embodiment, the left and right secondary images are formed in adjacent regions on the single CCD 116, so that the boundary between the left and right images on the CCD 116 is clarified. It is necessary to prevent overlap. For this reason, the field stops 270 and 271 are arranged at the position of the primary image. By making the straight edge of the semicircular aperture function as a so-called knife edge and transmitting only the light beam inside the edge, the boundary between the left and right images on the CCD 116 can be clarified.

The primary images formed on the field stops 270 and 271 are re-imaged by the relay optical systems 240 and 250 to become secondary images, and the primary image and the secondary image are inverted vertically and horizontally. . Therefore, the knife edge that defines the outside in the left-right direction at the position of the primary image defines the inside in the left-right direction at the position of the secondary image, that is, the boundary between the left and right images.

The relay optical systems 240 and 250 have the function of re-forming the primary image formed by the zoom optical systems 220 and 230 as described above, and each is constituted by three positive lens groups.

As shown in FIGS. 6 and 7, one relay optical system 240 has a first lens group 241 composed of a single positive meniscus lens and a second lens group 242 having a positive power as a whole. And a third lens group 243 composed of a single biconvex lens. The first lens group 241 and the second lens group 242 have the object-side focal point as a whole fixed at the image forming plane of the primary image by the zoom optical system 220 (the same plane as the field stop 271). Further, the third lens group 243 is the second lens group 2
The parallel light emitted from 42 is converged on the imaging surface of CCD 116. A pentaprism 272 for deflecting the optical path at right angles is disposed between the first lens group 241 and the second lens group 242, and a light amount adjustment is provided between the second lens group 242 and the third lens group 243. Brightness stop 244 is provided.

The other relay optical system 250 has the same configuration as the above-mentioned relay optical system 240, and includes first, second, and third lens groups 251, 252, and 253. A pentaprism 273 is disposed between the second lens group 252 and the lens group 252, and a brightness stop 254 is provided between the second lens group 252 and the third lens group 253.

The divergent light that has passed through the field stops 270 and 271 is again converted into substantially parallel light by the first lens groups 241 and 251 and the second lens groups 242 and 252 of the relay optical system. After passing through, the image is formed again by the third lens groups 243 and 253 to form a secondary image.

By disposing the pentaprisms 272 and 273 in the relay optical systems 240 and 250, the photographing optical system 20 along the optical axis direction of the close-up optical system 210 is provided.
0 can be shortened.

A convergence shifting prism 260 disposed between the relay optical systems 240 and 250 and the CCD camera 102
Has a function of narrowing the left and right intervals of subject light from the respective relay optical systems 240 and 250. In order to obtain a stereoscopic effect by stereoscopic vision, left and right zoom optical systems 220 and 23 are used.
0, a predetermined base line length is required between the relay optical systems 240 and 250. On the other hand, in order to form a secondary image in an adjacent area on the CCD 116, the distance between the optical axes needs to be smaller than the base length. Therefore, the congestion approaching prism 260
By shifting the optical axis of the relay optical system inward, the same CCD can be maintained while maintaining a predetermined base line length.
It allows for upward imaging.

The converging prism 260 is shown in FIGS.
As shown in FIG. 5, the optical axis shift prisms 261 and 262 of a pentagonal prism are arranged to face each other with a gap of about 0.1 mm.

As shown in FIG. 9, the optical axis shift prisms 261 and 262 have an incident end face and an exit end face parallel to each other, and have first and second reflecting faces parallel to each other inside and outside. ing. When viewed in a plane perpendicular to the entrance and exit end faces and the reflection surface, these optical axis shift prisms 261 and 262 form one of the acute apex angles of the parallelogram as a line perpendicular to the exit end face. It is a pentagonal shape formed by cutting out with.

The subject light from the relay optical systems 240 and 250 enters from the incident end faces of the optical axis shift prisms 261 and 262, is reflected by the outer reflecting surface, is directed inward in the left-right direction, and is directed to the inner reflecting surface. Is reflected again in the same optical axis direction as at the time of incidence, exits from the exit end face, and is
Incident on. As a result, the left and right object lights are narrowed only in the left and right intervals without changing their traveling directions, and the same CCD 1
16 to form a secondary image.

The illumination optical system 300 has a function of projecting illumination light onto a subject, and as shown in FIG. 6, an illumination lens 310 for adjusting the degree of divergence of divergent light emitted from the light guide fiber bundle 105, and an illumination lens 310. And a wedge prism 320 for matching the range with the photographing range. The optical axis Ax4 of the illumination lens 310 is parallel to the optical axis Ax1 of the close-up optical system 210 and decentered by a predetermined amount as shown in FIG. Do not match, and the amount of illumination light is wasted. By providing the wedge prism 310, the above mismatch can be eliminated, and the amount of illumination light can be used effectively.

The reflecting mirror 2 is composed of a sheet glass having a rectangular reflecting surface and a protection plate attached behind the sheet glass. This reflecting mirror is provided with both zoom optical systems 22.
Any pair of outer edges are directed parallel to axes orthogonal to the optical axes Ax2 and Ax3 of the optical system 0, 230, and the reflection surface is set to the optical axis A of the close-up optical system 210.
It is arranged in a state of being inclined 45 degrees with respect to x1. Therefore, the optical axis Ax1 of the close-up optical system 210
9 is bent forward at a right angle by the reflecting mirror 2, and FIG.
As shown in the figure, the tip of the bent optical axis Ax1 (optical axis A
A subject existing in the object plane existing at a position separated by the working distance from the close-up optical system 210 along x1) is irradiated with illumination light from the illumination optical system 300, and an image of the subject is captured. CCD 11 by the optical system 200
6 is formed. (Usage Form of Stereo Microscope) Next, a use form of the stereo microscope 101 according to the present embodiment having the above-described configuration will be described. Stereoscopic microscope 101 according to the present embodiment
Can take a conventional usage form in which the subject is photographed from a position (above or to the side of the subject) that does not disturb the operation, and of course, as shown in FIG. It is possible to photograph the inside of the nasal cavity without hitting the subject's body. That is, in the case of the conventional device, since the subject (inside of the nasal cavity) and the photographing optical system are arranged in a straight line, the housing housing the photographing optical system has an upper surface (ie, chest or abdomen) of the subject's body. According to the stereoscopic microscope 101 of the present embodiment, since the optical axis Ax1 connecting the subject and the imaging optical system is bent at a right angle by the reflecting mirror 2, the housing 1 of the stereoscopic microscope 101 is It does not hit P's body. Although the reflecting mirror 2 itself may hit the body of the subject P, the reflecting mirror 2 has only a slightly larger area than the optical paths of the illumination light and the subject light. The likelihood of hitting the subject's body is significantly lower than the possibility of the housing hitting the subject's body in the prior art.

In this embodiment, the stay 3 may be configured to be detachable from the housing 1. Then, the degree of freedom of the posture of the stereoscopic microscope 101 when it is arranged above or to the side of the subject is increased.

[0048]

Second Embodiment A stereo microscope 102 according to a second embodiment of the present invention is a stereo microscope 1 according to the first embodiment described above.
01 as compared with the stay 3
Only in the mounting position and the direction of inclination of the reflecting mirror 2 with respect to the photographing optical system 200 and the illumination optical system 300.

That is, the stay 3 in the stereoscopic microscope 102 of the present embodiment is counterclockwise in plan view around the optical axis Ax1 of the close-up optical system 210 with respect to the mounting position of the stay 3 in the first embodiment. At 90 degrees. The inclination direction of the reflecting mirror 2 with respect to the stay 3 is exactly the same as that of the first embodiment. Therefore, as shown in FIG. 11, the reflecting mirror 2 has any one pair of outer edges parallel to an axis orthogonal to both the optical axis Ax1 of the close-up optical system 210 and the optical axis Ax4 of the illumination lens 310. And the reflection surface thereof is arranged so as to be inclined at 45 degrees with respect to the optical axis Ax1 of the close-up optical system 210. Therefore, the optical axis Ax1 of the close-up optical system 210 is bent laterally at right angles by the reflecting mirror 2, and as shown in FIG. 11, the tip of the bent optical axis Ax1 (closed along the optical axis Ax1). An illumination light from the illumination optical system 300 is applied to a subject existing in an object plane existing at a position separated by the working distance from the up optical system 210). Formed on top.

FIG. 12 shows a stereoscopic microscope 1 according to the present embodiment.
It is a figure which shows the usage pattern of No. 02. As shown in FIG. 12, the stereoscopic microscope 102 according to the present embodiment can be used in exactly the same manner as the stereoscopic microscope 101 according to the first embodiment.

Also in this embodiment, the stay 3 may be configured to be detachable from the housing 1. In this case, the structures of the stay 3 and the reflecting mirror 2 to be removed are exactly the same as those of the first embodiment, so that the mounting position on the housing 1 side corresponds to the position corresponding to the first embodiment and the position corresponding to the second embodiment. If they are set at the respective positions, one stereoscopic microscope 102 can serve as both the first embodiment and the second embodiment, so that the handling of the stereoscopic microscope 102 is further improved.

Other configurations and operations in the second embodiment are exactly the same as those in the above-described first embodiment, and a description thereof will be omitted.

[0053]

Embodiment 3 A stereo microscope 103 according to a third embodiment of the present invention is a stereo microscope 1 according to the above-described first embodiment.
Compared with 01, only the connection structure between the tip of the stay 4 and the reflecting mirror 2 is different.

That is, as shown in FIG. 13, the tip of the stay 4 in the stereoscopic microscope 103 of this embodiment is
The rotation axis 4a fixed substantially at the center on the back surface of the zoom optical system 220, 230 is rotatable with a predetermined friction applied in a direction parallel to the axis orthogonal to the optical axes Ax2 and Ax3 of the zoom optical systems 220 and 230. I support it. Therefore, the reflecting mirror 2 is connected to the optical axes Ax2 and Ax2 of the zoom optical systems 220 and 230.
It is rotatable only in the direction of a plane perpendicular to the plane including both Ax3.

According to the present embodiment, the direction of the optical axis Ax1 of the close-up optical system 210 deflected by the reflecting mirror 2 is adjusted by arbitrarily adjusting the inclination angle of the reflecting mirror 2.
Can be changed freely. Therefore, even in a situation where the direction of the optical axis Ax1 ahead of the reflecting mirror 2 has to be kept constant, the angle of the housing 1 can be freely changed, so that the handling of the stereo microscope 103 is further improved.

The other constructions and operations of the third embodiment are exactly the same as those of the above-described third embodiment, and a description thereof will be omitted.

[0057]

Fourth Embodiment A stereo microscope 104 according to a fourth embodiment of the present invention is different from the stereo microscope 1 according to the first embodiment described above.
Compared with 01, only the connection structure between the tip of the stay 5 and the reflecting mirror 2 is different.

That is, as shown in FIG. 14, the tip of the stay 5 in the stereoscopic microscope 104 according to the present embodiment is attached to substantially the center of the back surface of the reflecting mirror 2 via the ball joint 5a. Therefore, the reflecting mirror 2 can be tilted in any direction within a certain angle range with respect to the position of the reflecting mirror 2 in the first embodiment. Therefore, the handling of the stereomicroscope 104 is further improved as compared with the third embodiment.

[0059]

As described above, according to the video microscope for operation of the present invention, it is possible to more reliably prevent the main body from hitting the body of the subject, and the handling is improved.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing the overall configuration of a surgery support system incorporating a video stereo microscope according to a first embodiment of the present invention;

FIG. 2 is an optical configuration diagram schematically showing an optical configuration in a video stereo microscope.

FIG. 3 is an optical configuration diagram schematically showing an optical configuration of a video stereoscopic viewer.

FIG. 4 is a plan view of an LCD panel.

FIG. 5 is an external perspective view of a stereo microscope.

FIG. 6 is a side view showing the entire configuration of the microscope optical system.

FIG. 7 is a front view showing the entire configuration of the microscope optical system.

FIG. 8 is a plan view showing the entire configuration of the microscope optical system.

FIG. 9 is a perspective view showing an optical path inside and outside the housing of the stereoscopic microscope.

FIG. 10 is a diagram showing a usage mode of the stereo microscope according to the first embodiment;

FIG. 11 is a perspective view showing optical paths inside and outside a housing of a stereoscopic microscope according to a second embodiment.

FIG. 12 is a diagram showing a usage mode of the stereo microscope according to the second embodiment;

FIG. 13 is a perspective view showing optical paths inside and outside a housing of a stereoscopic microscope according to a third embodiment.

FIG. 14 is a perspective view showing a stay and a reflecting mirror of a stereo microscope according to a fourth embodiment;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Reflecting mirror 3 Stay 4 Stay 5 Stay 101 Stereo microscope 200 Imaging optical system 210 Close-up optical system

Claims (5)

[Claims] 1. A surgical video microscope for capturing an image of a subject formed by a photographing optical system with an image pickup device, wherein the photographing optical system is held and light from the subject is introduced into the photographing optical system. A housing having an opening for reflecting light from a direction other than the optical axis direction of the imaging optical system supported by the housing to the imaging optical system through the opening of the housing to the optical axis direction. A video microscope for surgery, comprising: a reflecting mirror for allowing light to enter from above. 2. The surgical video system according to claim 1, wherein a pair of said photographing optical systems are provided, and said reflecting mirror simultaneously reflects light incident on said pair of photographing optical systems. microscope. 3. The surgical video microscope according to claim 1, wherein the reflecting mirror is supported by the housing so that the direction of inclination of the imaging optical system with respect to the optical axis can be adjusted. 4. The surgical video microscope according to claim 1, wherein the optical axis of the photographing optical system is bent in the middle of the optical system. 5. The surgical video microscope according to claim 1, wherein said reflecting mirror is detachable from said housing.